蝉联

蝉联	chán lián	to continue in a post / (to hold a post) several times in succession / (to win a title) in successive years / to stay at number one / to defend a championship
蝉	chán	cicada
联	lián	(bound form) to ally oneself with; to unite; to combine; to join / (bound form) (poetry) antithetical couplet